1.) Cheap. 2.) Too lazy to consider getting trained. Or too cheap to get training. 3.) Closed to new ideas, or ideas that do no conform to your pre conceived notions. 4.) Afraid to explore new ideas or concepts due to the fear of admitting you were wrong, or finding out they you aren’t as good as you think you are. Taking classes with other serious dudes, from a serious expert is an ego check. Most can’t overcome that hurdle even if funding and time aren’t an issue.